///
/// Copyright (C) 2015-2017, Cyberhaven
///
/// Permission is hereby granted, free of charge, to any person obtaining a copy
/// of this software and associated documentation files (the "Software"), to deal
/// in the Software without restriction, including without limitation the rights
/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
/// copies of the Software, and to permit persons to whom the Software is
/// furnished to do so, subject to the following conditions:
///
/// The above copyright notice and this permission notice shall be included in all
/// copies or substantial portions of the Software.
///
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
/// SOFTWARE.
///

#include <llvm/ADT/SmallVector.h>

#include <Translator/Translator.h>
#include <lib/Utils/Utils.h>

#include "InstructionLabeling.h"

using namespace llvm;

namespace s2etools {

LogKey InstructionLabeling::TAG = LogKey("InstructionLabeling");
char InstructionLabeling::PID;

bool InstructionLabeling::runOnFunction(llvm::Function &F) {
    foreach2 (bbit, F.begin(), F.end()) {
        BasicBlock &bb = *bbit;
        bb.setName("");

        foreach2 (iit, bb.begin(), bb.end()) {
            Instruction *instr = &*iit;
            instr->setName("");

            LoadInst *li = dyn_cast<LoadInst>(instr);
            unsigned regIndex;
            if (li) {
                Value *ptr = li->getPointerOperand();
                if (Translator::isGpRegister(ptr, &regIndex)) {
                    instr->setName(X86Translator::getRegisterName(regIndex));
                } else if (Translator::isPcRegister(ptr)) {
                    instr->setName("eip");
                }
            }
        }
    }

    return false;
}
} // namespace s2etools
